How to Remove the Adobe Serial on a Mac

By K.C. Winslow

Serial numbers for Adobe applications can become a real headache on Macintosh computers. Once you have installed an Adobe program, whether it is a retail copy or a demo, the serial number is stored in a file that automatically enters that information when you attempt to install or update Adobe programs. The result is an error message that says the license for a product has expired. Properly removing the old Adobe serial allows you to enter the new, correct serial number.

Step 1

Uninstall the new Adobe program if you have installed it before, removing the serial number. This action can be completed by going to Applications > Utilities > Adobe Installers.

Step 2

Download the Adobe CS3 or CS4 Clean Script from the Adobe website. Run the Clean Script.

Step 3

Remove the cache file that contains your old serial number by going to Library > Application Support > Adobe > Adobe PCD > cache. Locate the cache.db file. Drag it to the Trash and go to File > Empty Trash. When you reinstall and open your Adobe product, you will be prompted to enter a new serial number.